Summary:
- An upwelling occurs when deep ocean water rises to the surface.
- Strong winds blow surface water away from shore.
- This allows deeper water to flow to thesurface and take its place.
- Upwelling also takes place along the Equator.
- Winds blow the surface water north and south.
- This leaves a void that deep water can upwell into.
- The nutrient-rich water that comes up from the deep supports many living things.
- Downwelling of cold, dense water pushes deep water along.
- This drives thermohaline circulation.